\documentclass[12pt,a4paper]{article}\nofiles

\def\psred{\special{ps: 1 0.4 0.3 setrgbcolor}}
\def\psgreen{\special{ps: 0 0.9 0 setrgbcolor}}
\def\psblue{\special{ps: 0 0 1 setrgbcolor}}
\def\psmagenta{\special{ps: 1 0 1 setrgbcolor}}
\def\psblack{\special{ps: 0 0 0 setrgbcolor}}

\def\red#1{\psred{}#1\psblack{}}
\def\blue#1{\psblue{}#1\psblack{}}
\def\green#1{\psgreen{}#1\psblack{}}
\def\magenta#1{\psmagenta{}#1\psblack{}}

\begin{document}
\Large\psblack
\centerline{\Huge\sf A simple \TeX\ Example}

\vspace*{1cm}

\begin{verbatim}
Alice was beginning to get very tired of
sitting by her sister on the
bank, and of having nothing to do: once
or twice she had peeped into the book her
sister was reading, but it had no pictures
or conversations in it, `and what is the
use of a book,' thought Alice
`without pictures or conversation?' 
\end{verbatim}

\noindent{}\psred\verb|\end|\psblack

\vspace*{4cm}

Alice was beginning to get very tired of sitting by her sister on the
bank, and of having nothing to do: once or twice she had
peeped into the book her sister was reading, but it had no pictures
or conversations in it, `and what is the use of a book,'
thought Alice `without pictures or conversation?' 
\end{document}